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<?php
rcs_id('$Id: FoafViewer.php,v 1.4 2004/07/08 20:30:07 rurban Exp $');
//ini_set('include_path','.;C:/php/pear');
/**
* Basic FoafViewPlugin for PHPWiki.
*
* Please note; this is <em>heavily</em> based on an example file distributed with XML_FOAF 0.2
* HTTP GET vars:
* <kbd>foaf=uri</kbd> - Used to determine the URI of a FOAF file.
* <kbd>original=true</kbd> - Simply dumps contents of $foaf
*
* @author Daniel O'Connor <http://ahsonline.com.au/dod/FOAF.rdf>
* @author Davey Shafik <http://pear.php.net/user/davey>
* @date 2004-06-07
* @version 0.0.2
* @bug XML_FOAF 0.2 has problems with named RDF nodes (ie, http://www.ahsonline.com.au/dod/FOAF.rdf).
* Davey knows, will be fixing this soon.
* @todo "Friends" component
* @todo Named URLs (DC metadata)
* @todo "View in FOAFNAUT/foafexplorer/other"
* @bug Full name !available incorrectly handled.
*/
/**
* FoafViewer: Parse an RDF FOAF file and extract information to render as HTML
* usage: <?plugin FoafViewer foaf=http://www.ahsonline.com.au/dod/rawksuga.rdf original=true?>
* author: Daniel O'Connor <http://www.ahsonline.com.au/dod/FOAF.rdf>
*
* phpwiki version based on version 0.0.2 by Daniel O'Connor
*
* TODO:
* - use a template.
* - use the phpwiki internal user foaf data (stored by a UserPreferences extension)
* - fix the pear FOAF Parser or we'll write our own (based on our XmlParser)
*/
class WikiPlugin_FoafViewer
extends WikiPlugin
{
// The handler is handled okay. The only problem is that it still
// throws a fatal.
function _error_handler($error) {
if (strstr($error->errstr,"Failed opening required 'XML/FOAF/Parser.php'"))
return true;
elseif (strstr($error->errstr,'No such file or directory'))
return true;
return false;
}
function getName() {
return _("FoafViewer");
}
function getDescription() {
return _("Parse an RDF FOAF file and extract information to render as HTML");
}
function getVersion() {
return preg_replace("/[Revision: $]/", '',
"\$Revision: 1.4 $");
}
function getDefaultArguments() {
return array( 'foaf' => false, // the URI to parse
//'userid' => false,
'original' => false
);
}
function run($dbi, $argstr, &$request, $basepage) {
/* ignore fatal on loading */
/*
global $ErrorManager;
$ErrorManager->pushErrorHandler(new WikiMethodCb($this,'_error_handler'));
*/
// Require the XML_FOAF_Parser class. This is a pear library not included with phpwiki.
// see doc/README.foaf
if (findFile('XML/FOAF/Parser.php','missing_ok'))
require_once 'XML/FOAF/Parser.php';
//$ErrorManager->popErrorHandler();
if (!class_exists('XML_FOAF_Parser'))
return $this->error(_("required pear library XML/FOAF/Parser.php not found in include_path"));
extract($this->getArgs($argstr, $request));
// Get our FOAF File from the foaf plugin argument or $_GET['foaf']
if (empty($foaf)) $foaf = $request->getArg('foaf');
$chooser = HTML::form(array('method'=>'get','action'=>$request->getURLtoSelf()),
HTML::h4(_("FOAF File URI")),
HTML::input(array('id'=>'foaf','name'=>'foaf','type'=>'text','size'=>'80','value'=>$foaf)),
HTML::br(),
//HTML::p("Pretty HTML"),
HTML::input(array('id'=>'pretty','name'=>'pretty','type'=>'radio','checked'=>'checked'),_("Pretty HTML")),
//HTML::p("Original URL (Redirect)"),
HTML::input(array('id'=>'original','name'=>'original','type'=>'radio'),_("Original URL (Redirect)")),
HTML::br(),
HTML::input(array('type'=>'submit','value'=>_("Parse FOAF")))
//HTML::label(array('for'=>'foaf'),"FOAF File URI"),
);
if (empty($foaf)) {
return $chooser;
}
else {
//Error Checking
if (substr($foaf,0,7) != "http://") {
return $this->error(_("foaf must be a URI starting with http://"));
}
// Start of output
if (!empty($original)) {
$request->redirect($foaf);
}
else {
$foaffile = url_get_contents($foaf);
if (!$foaffile) {
//TODO: get errormsg
return HTML(HTML::p("Resource isn't available: Something went wrong, probably a 404!"));
}
// Create new Parser object
$parser = new XML_FOAF_Parser;
// Parser FOAF into $foaffile
$parser->parseFromMem($foaffile);
$a = $parser->toArray();
$html = HTML(HTML::h1(@$a[0]["name"]),
HTML::table(
HTML::thead(),
HTML::tbody(
@$a[0]["title"] ?
HTML::tr(HTML::td(_("Title")),
HTML::td($a[0]["title"])) : null,
(@$a[0]["homepage"][0]) ?
$this->iterateHTML($a[0],"homepage",$a["dc"]) : null,
(@$a[0]["weblog"][0]) ?
$this->iterateHTML($a[0],"weblog",$a["dc"]) : null,
//This seems broken?
/*
HTML::tr(HTML::td("Full Name"),
(@$a[0]["name"][0]) ?
HTML::td(@$a[0]["name"]) :
(@$a[0]["firstname"][0] && @$a[0]["surname"][0]) ?
HTML::td(@$a[0]["firstname"][0] . " " . @$a[0]["surname"][0])
: null
*/
HTML::tr(HTML::td("Full Name"),
(@$a[0]["name"][0]) ?
HTML::td(@$a[0]["name"]) : null
),
(@$a[0]["nick"][0]) ?
$this->iterateHTML($a[0],"nick",$a["dc"])
: null,
(@$a[0]["mboxsha1sum"][0]) ?
$this->iterateHTML($a[0],"mboxsha1sum",$a["dc"])
: null,
(@$a[0]["depiction"][0]) ?
$this->iterateHTML($a[0],"depiction",$a["dc"])
: null,
(@$a[0]["seealso"][0]) ?
$this->iterateHTML($a[0],"seealso",$a["dc"])
: null,
HTML::tr(HTML::td("Source"),
HTML::td(
HTML::a(array('href'=>@$foaf),"RDF")
)
)
)
)
);
if (DEBUG) {
$html->pushContent(HTML::hr(),$chooser);
}
return $html;
}
}
}
/**
* Renders array elements as HTML. May be used recursively.
*
* @param $array Source array
* @param $index Element Index to use.
* @todo Make sure it can look more than 1 layer deep
* @todo Pass in dublincore metadata
*/
function iterateHTML($array,$index,$dc=NULL) {
for ($i=0;$i<count($array[$index]);$i++) {
//Cater for different types
$string = $array[$index][$i];
if ($index == "mboxsha1sum") {
$string = '<a href="http://beta.plink.org/profile/' . $array[$index][$i] . '">'
.'<img src="http://beta.plink.org/images/plink.png" alt="Plink - ' . $array[$index][$i] . '" /></a>';
}
else if ($index == "depiction") {
$string = '<img src="' . $array[$index][$i] . '" />';
}
else if ((substr($array[$index][$i],0,7) == "http://") || (substr($array[$index][$i],0,7) == "mailto:")) {
$string = '<a href="' . $array[$index][$i] . '"';
if (@$dc["description"][$array[$index][$i]]) {
$string .= ' title="' . $dc["description"][$array[$index][$i]] . '"';
}
$string .= '>';
if (@$dc["title"][$array[$index][$i]]) {
$string .= $dc["title"][$array[$index][$i]];
}
else {
$string .= $array[$index][$i];
}
$string .= '</a>';
}
@$html .= "<tr><td>" . $index . "</td><td>" . $string . "</td></tr>";
}
return HTML::raw($html);
}
}
// $Log: FoafViewer.php,v $
// Revision 1.4 2004/07/08 20:30:07 rurban
// plugin->run consistency: request as reference, added basepage.
// encountered strange bug in AllPages (and the test) which destroys ->_dbi
//
// Revision 1.3 2004/06/16 10:38:59 rurban
// Disallow refernces in calls if the declaration is a reference
// ("allow_call_time_pass_reference clean").
// PhpWiki is now allow_call_time_pass_reference = Off clean,
// but several external libraries may not.
// In detail these libs look to be affected (not tested):
// * Pear_DB odbc
// * adodb oracle
//
// Revision 1.2 2004/06/13 13:54:25 rurban
// Catch fatals on the four dump calls (as file and zip, as html and mimified)
// FoafViewer: Check against external requirements, instead of fatal.
// Change output for xhtmldumps: using file:// urls to the local fs.
// Catch SOAP fatal by checking for GOOGLE_LICENSE_KEY
// Import GOOGLE_LICENSE_KEY and FORTUNE_DIR from config.ini.
//
// Revision 1.1 2004/06/08 21:38:21 rurban
// based on dans version 0.0.2 - simplified
//
// For emacs users
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:
?>
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